/*
* INSANE - Interactive Structural Analysis Environment
*
* Copyright (C) 2003-2005
* Universidade Federal de Minas Gerais
* Escola de Engenharia
* Departamento de Engenharia de Estruturas
* 
* Author's email :    insane@dees.ufmg.br
* Author's website :  http://www.dees.ufmg.br/insane
* 
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or any later version.
* 
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
* GNU General Public License for more details.
* 
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
*/
package br.ufmg.dees.insane.ui.rich.prep.view.command;

import java.util.ArrayList;
import java.util.ListIterator;

import javax.swing.JInternalFrame;

import br.ufmg.dees.insane.commons.command.Command;
import br.ufmg.dees.insane.ui.rich.prep.controller.PrepControllerHE;
import br.ufmg.dees.insane.ui.rich.prep.view.DesktopPrep;
import br.ufmg.dees.insane.ui.rich.prep.view.InterfacePrep;

/**
 *
 * @author Ferreira, Reginaldo & Pitangueira, Roque
 * @since October 2006
 */
public class DeleteCommand implements Command, Cloneable {
    
    private InterfacePrep intFrame;
    private DesktopPrep desktop;
    private PrepControllerHE controller;
    private ArrayList shps;
    
//  ****************************************************************************
	
    /** Creates new DeleteCommand */
    public DeleteCommand(JInternalFrame parent) {
        this.intFrame = (InterfacePrep)parent;
    }
    
    public DeleteCommand() {}
    
//  ****************************************************************************
	
	/** Execute method. */
    public void execute() {
        
        controller = this.intFrame.getController();
        if (controller.isSelected()) {
            shps = (ArrayList)controller.removeSelection();
            intFrame.getView().getDrawingArea().repaint();
            controller.getModel().update();
            desktop.addToUndo((Command)this.clone());
            desktop.getDesktopTextArea().addText("\nObjects was deleted.");
        }
    }
    
//  ****************************************************************************
	
	/** Undo method. */
    public void undo() {
        ListIterator sh = shps.listIterator();
        while (sh.hasNext()) {
            controller.add(sh.next());
        }
    }
    
//  ****************************************************************************
	
    /**
     * Impossible to redo - Not implemented.
     */
    public void redo() {}
    
//  ****************************************************************************    
   
    public Object clone() {
        try {
            DeleteCommand cmd = (DeleteCommand)super.clone();
            cmd.shps = (ArrayList)shps.clone();
            return cmd;
        } catch (CloneNotSupportedException e) {
            throw new Error("Clonning ERROR - This should never happen!");
        }
    }
    
//  ****************************************************************************

	public void setParent(InterfacePrep currentintFrame, DesktopPrep dsk)
	{
		this.intFrame = currentintFrame;
		this.desktop = (DesktopPrep)dsk;
	} 
	
//  ****************************************************************************
}

